Two months before the massacre at Stoneman Douglas High School in Florida, a retired Secret Service agent warned administrators that the school could be vulnerable to a gunman, the Sun Sentinel reports:

Gates were unlocked. Students did not wear identification badges. A fire alarm could send students streaming into the halls. Active-shooter drills were inadequate, he said.

The retired agent, Steve Wexler, said he made his point by strolling through the school with Post-it notes, attaching them to places his bullets or knife would land if he were an intruder. No one stopped him, he said.

In an interview with the South Florida Sun Sentinel, Wexler said he was invited to analyze the school’s security and presented his recommendations to four staff members.

The discovery that the father of the man who killed 49 people at an Orlando nightclub in 2016 was an FBI informant was an insufficient reason to reject the case against the widow of the mass shooter, a judge said Monday.

Lawyers for Noor Salman urged a judge to throw out the case because prosecutors withheld information that Omar Mateen’s father, Seddique Mateen, worked as a confidential FBI informant at various times between January 2005 and June 2016.

But U.S. District Judge Paul Byron rejected a motion to dismiss or declare a mistrial, saying Seddique Mateen’s role as a former informant “does not change the dynamic of whether Noor Salman aided and abetted,” NBC News reports.

Salman is on trial on charges of aiding and abetting her husband’s June 2016 attack on Pulse, a popular gay club in Orlando, and obstructing law enforcement’s investigation by falsely denying her role in the attack, which was one of the deadliest mass shootings on U.S. soil.

Omar Mateen told police before he was killed that he shooting was done in the name of ISIS.

Acting FBI Deputy Director David Bowdich acknowledged to members of Congress on Tuesday that the bureau failed to properly follow up on two warning calls about the former student who gunned down 17 students and teachers at a Florida school on Valentine’s Day.

Lawmakers left the private briefing feeling frustrated and disappointed, saying the bureau’s response offered little to no new information, and the FBI still has no strategy or plan to correct future mistakes.

Nikolas Cruz via instagram

The meeting “raised more questions than it answered,” U.S. Rep. Ron DeSantis, R-Fla., tweeted after the closed-door briefing in Washington. “We should have more answers 20 days after the shooting. This was clearly a major failure and Americans deserve swift accountability and reform.”

Rep. Raja Krishnamoorthi, D-Ill., said the lack 0f new information makes it difficult for lawmakers to understand what went wrong and how the bureau could avoid similar blunders.

“A very specific lead was given to the FBI, and they just botched it,” Krishnamoorthi said upon leaving the meeting, the South Florida Sun-Sentinel reports. “Right now we have to find out why that happened. Most important for me is: How do we prevent this from happening again, and how do we actively figure out who is on the verge of committing a similar school shooting or any other act of terror like this?”

The first tip came in September from a Mississippi man, who alerted the FBI to a YouTube user named “nikolas cruz” – the same name as the school shooter. The tipster boasted, “I’m going to be a professional school shooter.”

In early January, a caller who said he was close to Cruz warned that “He’s going to explode” and appeared on the verge of violence.

The FBI never forwarded the information to the FBI’s Miami field office, so the tip was never investigated.

Some Republicans are calling for the resignation of FBI Director Christopher Wray, while some Democrats say such a move would be premature.

An FBI informant investigating a terrorism sting in Palm Beach County is accused of a long-running scheme to commit fraud.

Mohammed Agbareia, whom the FBI classified as a “national security asset,” is expected to plead guilty Friday after his arrest in June on six federal charges alleging he committed fraud for 10 years beginning in 2007, the South Florida Sun-Sentinel reports.

Prosecutors said Agbareia posed as a “stranded traveler” and defrauded victims out of more than $300,000.

Agbareia became an undercover informant a year after he was released from prison for a prior fraud conviction.